Haier 2HUM18HA03/R2 - annexe 1 Installation Manual

Also see for 2HUM18HA03/R2: Installation manual Operating manual

Contents

Outdoor unitForced fastening without careful centeringmay damage the threads and cause aleakage of gas.Pipe Diameter ( )Liquid side 6.35mm(1/4")Gas side 9.52mm(3/8")Fastening torque18N.m40N.mGas side 12.7mm(1/2") 55N.m1.Installation of Outdoor Unit3.Connection4.Attaching Drain-Elbow2.Connection of pipesInstall according toTo bend a pipe, give the roundness as large as possible not to crush the pipe ,and the bending radiusshould be 30 to 40 mm or longer.Connecting the pipe of gas side first makes working easier.The connection pipe is specialized for R410A.Be careful that matters, such as wastes of sands, etc. shall not enter the pipe.The standard pipe length is 10m. If it is over 20m, the function of the unit will be affected. If the pipe hasto be lengthened, the refrigerant should be charged, according to 20 g/m. But the charge of refrigerantmust be conducted by professional air conditioner engineer. Before adding additional refrigerant,perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then chargeadditional refrigerant.Use the same method on indoor unit. Loosen the screws on terminal block and insert the plugs fully intoterminal block, then tighten the screws.If wiring is not correct, proper operation can not be carried out and controller may be damaged.If the drain-elbow is used, please attach it asfigure. (Note: Only for heat pump unit.)Drawing for the installation of indoor and outdoor unitsInsert the cable according to terminal number in the same manner as the indoor unit.Fix the cable with a clamp.Half union Flare nutSpanner Torque wrench6CAUTIONIn case the elevation A is more than 5m,oil trap shoud be installed every 5~7mMax. Length: B1max =20m B2 max =20mMax.Elevation: A1 max =15m A2 max =15mIn case the pipe length B is more than 20m,the refrigerant should be charged, according to 20 g/m.In case A is more than 5mA3 max =15m B1max +B2 max =35mABOutdoor unitIndoor unitA1B1Indoor unitA2B2 Outdoor unitIndoor unitB1Indoor unitB2Outdoor unitIndoor unitOil trapA3Outdoor unitIndoor unitA1B1Indoor unitA2B2For the 1by 2 models which outdoor unit capacity is 18000 BTU , the standard pipe length5 meters, double units is 10 meters. If total pipe length is more than 20 metres, charge more refrigerant is needed.of single indoor unit is